Apparently everybody...
I don't see why you dislike him... Is it just because you had trouble coming up with the rupees to pay him? Seriously, most people just don't like him because it's "the cool thing to do".
Agreed. He's actually a quite fun part of the game.
Also agreed.
It...
Technically Tingle was in TP (what was his name?), as the guy in Hyrule Town who does the game thing.
Yes, we will see Tingle again. Take a look-see: http://www.zeldadungeon.net/forum/showthread.php?t=3176